Geodetic model for teaching motion on the Earth’s spheroidal surface
Geodetic model for teaching motion on the Earth’s spheroidal surface
复制标题
用于教授地球椭球表面运动的大地测量模型
DOI:
10.1088/1361-6404/ac0e87
复制
发表时间:
2021
影响因子:
0.7
通讯作者:
Edwards, John M
中科院分区:
文献类型:
--
作者:
Edwards, Boyd F;Edwards, John M
We explore the forces that shape our spheroidal Earth and the forces that govern the motion of a puck that slides without friction on its surface. The Earth's stable spheroidal shape (apart from small-scale surface features) is determined by balancing the gravitational forces that hold it together against the centrifugal forces that try to tear it apart. The motion of a puck on its surface differs profoundly from motion on a sphere because the Earth's spheroidal deformations neutralize the centrifugal and gravitational forces on the puck, leaving only the Coriolis force to govern the motion. Yet the Earth's spheroidal deformations are small and difficult to see in scale drawings. To assist students in exploring the crucial role of these deformations for motion on the Earth's surface, we develop a model of uniformly rotating homogeneous earth-like planets with arbitrary eccentricities and arbitrary angular speeds of rotation, derive equations of motion for a puck sliding on the frictionless surface of such a planet, and introduce CorioVis software for visualizing this motion. By construction, this model replicates the rotational properties of the reference spheroid that is used in terrestrial cartography, geodesy, and the global positioning system.
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DOI:
10.1103/physrevstper.3.010108
发表时间:
2007
影响因子:
--
作者:
P. Kohl;David Rosengrant;N. Finkelstein
通讯作者:
N. Finkelstein
DOI:
10.1103/physrevstper.3.010109
发表时间:
2007
影响因子:
--
作者:
Noah S. Podolefsky;N. Finkelstein
通讯作者:
N. Finkelstein
影响因子:
0.9
作者:
P. Mohazzabi
通讯作者:
P. Mohazzabi
影响因子:
0.9
作者:
O. Thompson
通讯作者:
O. Thompson
影响因子:
0.9
作者:
J. N. Boyd;P. Raychowdhury
通讯作者:
P. Raychowdhury